<div dir="ltr"><div>Continuing with this same example, How can I count the number of times a student has received an A across all the classes?<br><br></div>I can get it to trigger each time a student appears in the rosters of 2 different teachers and that student has an A in both but I can't figure out how to track it across more then that. <br>
<div><div><div><div class="gmail_extra"><br><br><div class="gmail_quote">On Fri, Apr 5, 2013 at 4:50 AM, Stephen Masters <span dir="ltr"><<a href="mailto:stephen.masters@me.com" target="_blank">stephen.masters@me.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Just thought I'd mention that I hadn't replied to this, because it looks way too much like comp-sci homework. Not sure whether that's the same reason others haven't replied either. ;)<br>
<br>
A hint though to get you started. You can probably use something like...<br>
<br>
$student: Student(grade != null) from $roster<br>
<br>
… with a few lines before that to pick out the roster in a similar fashion.<br>
<br>
To understand it, check out the Drools Expert manual for the "from" operator for working with lists/collections.<br>
<br>
Steve<br>
<div class="HOEnZb"><div class="h5"><br>
<br>
On 3 Apr 2013, at 19:59, burmanator <<a href="mailto:alexburman@gmail.com">alexburman@gmail.com</a>> wrote:<br>
<br>
> So the example I am working with is this:<br>
> You have a Teacher object<br>
> that stores a list of Rosters objects<br>
> in each Roster is a list of Students objects<br>
> each Student has a grade value<br>
><br>
> How would I go about creating a rule to find all the students that got As<br>
> for a given Teacher across all her Rosters?<br>
><br>
><br>
><br>
> --<br>
> View this message in context: <a href="http://drools.46999.n3.nabble.com/creating-a-rule-regarding-an-element-of-list-stored-in-an-object-in-a-list-tp4023205.html" target="_blank">http://drools.46999.n3.nabble.com/creating-a-rule-regarding-an-element-of-list-stored-in-an-object-in-a-list-tp4023205.html</a><br>
> Sent from the Drools: User forum mailing list archive at Nabble.com.<br>
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</div></div></blockquote></div><br><br clear="all"><br>-- <br>Sincerely,<br>Alex Burman<br>cell: 908-672-0198
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